Definition of digital media
Digital media mainly refers to the carrier of recording, processing, disseminating and obtaining information in the form of binary numbers
Definition of digital media
Digital media is the digital content works, with modern network as the main communication carrier, through a perfect service system, distributed to the terminal and users for consumption.
Media classification
In the I.374 standard issued by ITU-T, the telecommunication standardization group of the International Telecommunication Union (ITU), media is divided into the following five categories.
(1) Perception media
Perception media refers to a type of media that directly acts on people’s senses to make people feel something. For example, speech, music, etc. that can produce auditory responses, images, videos, etc. that can produce visual response, and braille that can produce a tactile response.
(2) Presentation media
Presentation media is a type of media artificially constructed for processing, processing, storage and transmission of sensory media, such as audio encoding, which can digitize the audio signal and compress them into MP3 and other formats, image encoding, which can digitize images and compress them into JPEG and other formats, and video coding, which can digitize video information and compress it into MPEG and other formats.
(3) Display media
Display media refers to devices that acquire and display information. It contains two types of information input media and information output media. Common information input media include keyboard, mouse, scanner, etc. Output media include monitors, printers, speakers, etc.
(4) Storage media
Storage media is a physical medium used to store representation media containing CD, hard disk, USB disk and other devices that can be used to store various digital media data.
(5) Transmission media
Transmission media is the physical path between the transmitter and the receiver in the data transmission media system. For example, cable, optical fiber and other wired transmission channels, wireless transmission channels such as electromagnetic waves and satellite communications.
